Home / 22,687.43-31,306.51-21,015.59

Finding the Fourth Proportional to 22,687.43, 31,306.51 and 21,015.59

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Solution

The fourth proportional to 22,687.43, 31,306.51 and 21,015.59 is: 28,999.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,687.43 : 31,306.51 = 21,015.59 : x
  2. Step 2: Convert to fraction form
    22,687.43/31,306.51 = 21,015.59/x
  3. Step 3: Cross multiply
    22,687.43x = 31,306.51 × 21,015.59
  4. Step 4: Simplify right side
    22,687.43x = 657,924,778.49
  5. Step 5: Solve for x
    x = 657,924,778.49/22,687.43
  6. Step 6: Final answer
    x = 28,999.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.